Heinrich Haagen, a farmer, his wife Barbara, and children (Johannes, age 18; Ulrich, age 14; Barbara, age 11; Georg, age 5; Margaretha Maria, age 2) are recorded on the 1767 census of Hölzel in Household No. 4. They had settled there on 11 September 1767.
In 1788, Johannes Haagen moved from Hölzel to Dehler.
In 1790, Georg Haagen moved from Hölzel to Preuss.
In 1794, Ulrich Haagen and his family moved from Hölzel to Preuss.
In 1797, Andreas Haagen moved from Hölzel to Dehler.
The 1767 census records that Heinrich Haagen came from the German village of Nassgut in the Bamberg region.
- Mai, Brent Alan. 1798 Census of the German Colonies along the Volga: Economy, Population, and Agriculture (Lincoln, NE: American Historical Society of Germans from Russia, 1999): Dl33, Dl42, Ps09, Ps82, Mv0936, Mv0938, Mv0952, Mv0957.
- Pleve, Igor. Einwanderung in das Wolgagebiet, 1764-1767 Band 2 (Göttingen: Göttinger Arbeitskreis, 2001): 110.